No definitions found for 'be diffident'
Perhaps one of these:
beatified,
boat davits,
beat of drum,
bad faith,
body of water,
bit bitten stung ,
body of the place,
body pad,
bad habit,
bit pattern,
buyout bid,
boat paddle,
beat of a watch,
bad debt,
beautified,
bath powder,
by deputation,
buddy-buddy,
bedaubed,
beatified blessed ,
buteo buteo,
beat about